Subject: Re: Log area on-disk for the journal
To: None <>
From: Michael van Elst <>
List: tech-kern
Date: 10/23/2006 05:35:02 (Bill Studenmund) writes:

>Why? If you are up-to-date enough to have a journaled file system, why=20
>don't you have up-to-date tools?

You may need to transport the disk to an older system and you
may want to run the same filesystem without journaling.

This is not a necessary feature, it is just nice to have. With
ext3 I can promote/demote from/to ext2 easily. With Solaris UFS
the journal ist just a mount option.

>Old tools don't know how to tell if a journal is dirty.

True, the journal would be lost.

                                Michael van Elst
                                "A potential Snark may lurk in every tree."